Safety catch



Jan. 1, 1929. I 1,697,593 V J. FIELDING SAFETY CATCH \lljll N v v INVENTO Q. f

ATTORNEYS.

Patented Jan. 1, 1929.

JOHN FIE'LnrNe, or noarnrnovtnsncn, RHODE isLA'Nn, As'sIG'NoR ons-HALF T JOSEPH P. WHIrAKER, or APIPONAUG, Rr onn rsnA Nn. i

r serum: CATCH.

Application filed February 13, 1928. Serial N; 253,968.;

This invention relates to a safety "catch for securing in position pin stems of the type more particularly applied to jewelry; and is an improvement on 't-heconstruction disclosed inPatent-No. 1,616,964 dated FebruaryIS, 1927';

. against strains tending to either close or invention consists of certain novel features open the pin slot by having an inside and outside pivotal bearing one in each of the body member of the catch.

With these and other objects in view, the

. appended claims.

In the accompanying drawings: Fig-ure lisa side elevation-10f my improved safety catch as mountedjup'on a' bar pin or the, like; i

Figure 2 shows a blanko f the body member before being bent into position and slotted. Figure 8 is a plan view of thebody member having been slotted and in spread-out position. 7

Figure 1 is a central sectional View "of Figure 3. v

Figure 5 is a plan view ofthe keeper. Figure 6 is a sectional View thereof. Figure 7 is a central sectional view illustrating the body and keeper in certain posi-.

tion which they assume before the ears of the body are closed on the keeper to secure it in position.

Figure 8 is a sectional view o-ft'he body and keeper in assembled position.

Figure 9 is an elevation thereof in a position at right angles to that shownin Figure 8 with the keeper in open position.

Figure 10 is a view similar to Figure 9 showing the keeper in closed position in the a body.

It is found in the operation of safety catches of the character herein described that a strain in certain directions on the handle member of the keeper tends to close the pin stem receiving slot therein and strains in another direction tends to spread open this slot; and in order to support the keep-er in a rotatable bearing to resist such strains a rotatable bearing is formed'toboth extendinsideiof portions of. thekeeper "and also to extend outside of portions of the keeperso as to resist both opening and closing strains of the keeper which object is accom pilished in the prior patent above referred to of which -I am one of the joint inventors, and inaccomplishing this result in the patented construction referred to I find that. very fine workmanship was" necessary to form the groove about the tr unnion and fL'nthe-rasthe keeper was supported entirely by a trunnion extending fromone ear "only, it wasnecessary to extend the trunnion entirely through the keeper thereby weakening the same to 'a 'certain extent by removing a certain amount of stock, and in order toavoidthe disadvantages of this patented constructionabove referred to aind to retain the advantages of the inside and outside bearings, l have formed a re ce's's in one ear of the b'ody'portion ofthecatch and a trunnion on the otherjear andto coo-perate therewith I have'pr'ovid'ed a trunnion on one face of the keeper to extend into the' recess in one ear and a recess on the *other face of the keeper to receive the trunnion on the other ear by which construction it is not necessary to extend the trunnion-"on the ear entirely across the bridging space between the ears or to remove as much stock from the keeper as in the patented construction herev 'tofore referred to, by which construction]: obtain a spaced and increased bearing support for the keeper by which thejsu pportin g strength of both ears is utilized and a. greater amount of stock is present in the keeper to r'esists'uch strains :as =the same receives; and

the following is a. detailed description 'of the present embodiment of this invention and showing one construct-ion'ofsafety catch by which these advantageous results may be accomplished. v

lVithreference to the drawings, 10 desighates a bar-pin or the like having a pin-stein joint 11 mountedthereon with a pin stem 12 pivoted as at 13. A safety catch generally designated 14 receives the pointed end of the pin stem 12 and consists of a body portion 15 having spaced ears 16.and 17 extending tlierefrom with a keeper 18 rotatably [mounted between these ears in the manner to be hereinaftcr described. Ear 16 is provided with p I v a recess 19 and a trunnion 20 extends from the opposite ear 17. The keeper 18 is recessed as at 21 in one face to rotatably receive the trunnion while its opposite face has a trunnion 22 extending therefrom to be rotatably-supported in the recess 19 in the ear 16.

Slots 23, and 24 are provided in the ears of the body member and a slot 25in the keeperwherebv when the keeper is in .one

A '9 the s1ots'23, 24 and 25 register to receiveposition of rotation as illustrated in Figure the pin stem 12 and when thekeeper is rotated by means of a handle26 into the position it lustratedin Figure 10the slot 25 is out of registrywith slots 23 andL24 whereby the pin stem .is held against. removalby the safety catch. Thekeeper is held in its closed positionas illustrated in ;I. igure 10 by means of the d'etent'27 on the keeper, which may be 7 snapped beyond the bar 28 extending across the rotatable mounting which- I have provided; 1 The parts 29 and 30 are prevented from moving toward each other bythe trunnion 20- which is rotatably mounted in the" recess 21 in the keeper to support the parts 29 and 30 against such closing movement and these parts are prevented from moving away from each other by the trunnion 22' enthe keeper which is rotatably mounted in there ,cess 19inj one of the ears.

v By the provision of rotatable mounting having a bearing in each one of theea'rsImay extend the trunnion on one ear only'a portion of the 'distance'between the ears as is clearly illustrated in Figures 7 and 8 by which a greater amount of stock remains in the keeper than in the patented construction referred to, as ure 6. e

will'be clearly apparent in Fig- It'will beapparent fromthe construction "described thatI have provided a safety catch which isstrong and durable in construction and one which may be made comparatively small'andyet possess the required strength for itssuccessful operation.

Theforegoing description is directed s0le- 1y towards the constructionillustrated, but

changes to. which the device is suscepticle, the invention being defined and limited only by the termsof the appended claims. I

i I claim:

1. In a safety catch a body memberhaving spaced ears, a keeper between said ears, means for rotatably mountin sald keeper COIlSlSll ing of a recess in one ear and a projection on the other ear and a cooperating pro ection: on one face of the keeper and a recess n 1t-S" opposite face to rotatably fit thecorrespond. ing oppositely formed parts onthe ears and I desire it to be understood that I reserve the prii ilegelof resorting to all the mechanicalform abearing to resist either an opening or closing strain'on said keeper. Y

2. 'In a safety catch, a body member having spaced ears, a keeper between said ears and bearing means for rotatably mount ng said keeperin said ears consisting of: formations between said keeper and ears to provide for said keeper an inside bearing in one of said ears and an outside bearing in the other of said ears.

3. In a safety catch, a body member haying spaced ears one of said ears having a recess in the inner face thereof, a trunnion extend ing' from the other of said ears toward sa d recess and partially bridging thespa ce beand a projection on. its opposite .face. to eX-.

1y mount said keeper in position.

In a safety catch, a body member having spaced ears with a radial s'lot to receive a pin stem arotatable keeper poslt oned between said ears and being slotted to register with the slotted ears in one position of rotatend into said recess-in said ear to operativetion, an arcuate projection extending inward-j ly from one of saidears, said keeper having a recess of corresponding shape tOufit there.

over and have a rotatable bearing thereon. an

arcuate projection on said keeper. and the other of said ears haying a recess of corresponding shape to provide a rotatable hearing for said keeper projection, whereby said keeper is provided with rotatable hearing in both of said ears,

JOHN FniLn Ne.

i i ,100 In testimony whereof I affix my signature.

tween said ears, a rotatable keeper hav ng a y recess in one face tOI'QCQlVG' sa d 7311111111011 

